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105 lines
3.5 KiB
105 lines
3.5 KiB
//===-- llvm/CodeGen/GlobalISel/MachineIRBuilder.cpp - MIBuilder--*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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/// \file
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/// This file implements the MachineIRBuidler class.
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/GlobalISel/MachineIRBuilder.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/Target/TargetInstrInfo.h"
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#include "llvm/Target/TargetOpcodes.h"
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#include "llvm/Target/TargetSubtargetInfo.h"
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using namespace llvm;
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void MachineIRBuilder::setMF(MachineFunction &MF) {
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this->MF = &MF;
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this->MBB = nullptr;
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this->TII = MF.getSubtarget().getInstrInfo();
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this->DL = DebugLoc();
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this->MI = nullptr;
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}
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void MachineIRBuilder::setMBB(MachineBasicBlock &MBB, bool Beginning) {
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this->MBB = &MBB;
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Before = Beginning;
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assert(&getMF() == MBB.getParent() &&
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"Basic block is in a different function");
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}
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void MachineIRBuilder::setInstr(MachineInstr &MI, bool Before) {
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assert(MI.getParent() && "Instruction is not part of a basic block");
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setMBB(*MI.getParent());
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this->MI = &MI;
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this->Before = Before;
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}
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MachineBasicBlock::iterator MachineIRBuilder::getInsertPt() {
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if (MI) {
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if (Before)
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return MI;
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if (!MI->getNextNode())
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return getMBB().end();
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return MI->getNextNode();
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}
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return Before ? getMBB().begin() : getMBB().end();
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}
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//------------------------------------------------------------------------------
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// Build instruction variants.
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//------------------------------------------------------------------------------
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MachineInstr *MachineIRBuilder::buildInstr(unsigned Opcode, Type *Ty) {
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MachineInstr *NewMI = BuildMI(getMF(), DL, getTII().get(Opcode));
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if (Ty) {
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assert(isPreISelGenericOpcode(Opcode) &&
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"Only generic instruction can have a type");
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NewMI->setType(Ty);
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} else
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assert(!isPreISelGenericOpcode(Opcode) &&
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"Generic instruction must have a type");
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getMBB().insert(getInsertPt(), NewMI);
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return NewMI;
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}
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MachineInstr *MachineIRBuilder::buildInstr(unsigned Opcode, unsigned Res,
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unsigned Op0, unsigned Op1) {
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return buildInstr(Opcode, nullptr, Res, Op0, Op1);
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}
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MachineInstr *MachineIRBuilder::buildInstr(unsigned Opcode, Type *Ty,
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unsigned Res, unsigned Op0,
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unsigned Op1) {
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MachineInstr *NewMI = buildInstr(Opcode, Ty);
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MachineInstrBuilder(getMF(), NewMI)
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.addReg(Res, RegState::Define)
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.addReg(Op0)
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.addReg(Op1);
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return NewMI;
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}
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MachineInstr *MachineIRBuilder::buildInstr(unsigned Opcode, unsigned Res,
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unsigned Op0) {
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MachineInstr *NewMI = buildInstr(Opcode, nullptr);
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MachineInstrBuilder(getMF(), NewMI).addReg(Res, RegState::Define).addReg(Op0);
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return NewMI;
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}
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MachineInstr *MachineIRBuilder::buildInstr(unsigned Opcode) {
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return buildInstr(Opcode, nullptr);
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}
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MachineInstr *MachineIRBuilder::buildInstr(unsigned Opcode, Type *Ty,
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MachineBasicBlock &BB) {
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MachineInstr *NewMI = buildInstr(Opcode, Ty);
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MachineInstrBuilder(getMF(), NewMI).addMBB(&BB);
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return NewMI;
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}
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